US based MK Diamond Products manufactures a complete line of single/double disc grinders and scarifiers. Each grinder is designed for concrete cleaning, flattening and smoothing concrete surfaces, leveling out high spots and curled joints, removing coating, mastics, epoxies, urethane, adhesive residues, paint, or polishing concrete and natural stone.

The MK-SDG Single Disc Grinder is intended to be used to smooth out rough areas and other surface irregularities, feather patches and clean industrial floors. The tapered front nose provides enhanced visibility. The removable handles and nose weight provide for easy transportation and storage. An easy to operate foot pedal raises grinding discs off the ground for engine starting and idling. The MK-SDG is also the only single disc grinder with a fully encapsulated grinding shroud with vacuum pick up. Powered by a gas Honda GXV340 engine the SDG-11 weighs only 96 kg (212 lb). The SDG-3 has an electric Baldor 3 hp motor. New this year, MK Diamond is offering a Honda GX390 propane version.

The MK-DDG Dual Disc Grinder has been designed with two counter-rotating heads that prevent pulling during grinding. A 550 mm (22-inch) grinding width makes for quick removal. It can be used to level small areas of uneven joints or high spots of 1.5 to 3 mm (1/16” to 1/8”). An ergonomically designed T-grip handle provides easy handling and maneuvering. The built-in dust shroud contains grinding debris and the vacuum port allows for dust-free dry grinding. A water control valve is included for wet grinding. The grinder has a two-position wheel carriage for grinding and easy transport.

Both grinders are excellent for repairing damaged concrete slabs, removing urethanes, epoxy thin-coats, leveling high spots or surface imperfections, smoothing rough surfaces, rain marks or trowel marks, removing mastics, thin-sets, and paint build-ups. They are primarily used for the top surface of the floor. A 10 or 20 segment, 250 mm (10”) diameter diamond grinding head can be used to level, smooth or clean the top surface of concrete slabs. There is a hard bond grinding head for green concrete and asphalt. The soft bond grinding head is for grinding cured concrete.